/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:09:49,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:09:49,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:09:49,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:09:49,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:09:49,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:09:49,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:09:49,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:09:49,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:09:49,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:09:49,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:09:49,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:09:49,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:09:49,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:09:49,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:09:49,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:09:49,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:09:49,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:09:49,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:09:49,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:09:50,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:09:50,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:09:50,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:09:50,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:09:50,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:09:50,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:09:50,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:09:50,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:09:50,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:09:50,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:09:50,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:09:50,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:09:50,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:09:50,085 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:09:50,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:09:50,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:09:50,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:09:50,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:09:50,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:09:50,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:09:50,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:09:50,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:09:50,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:09:50,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:09:50,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:09:50,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:09:50,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:09:50,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:09:50,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:09:50,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:09:50,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:09:50,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:09:50,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:09:50,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:09:50,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:09:50,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:09:50,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:09:50,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:09:50,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:09:50,553 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:09:50,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:09:50,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbf7ba58/c795bdc5aa824c1d9b359f074113e00a/FLAG627ff227e [2020-12-22 08:09:51,385 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:09:51,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:09:51,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbf7ba58/c795bdc5aa824c1d9b359f074113e00a/FLAG627ff227e [2020-12-22 08:09:51,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbf7ba58/c795bdc5aa824c1d9b359f074113e00a [2020-12-22 08:09:51,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:09:51,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:09:51,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:09:51,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:09:51,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:09:51,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:09:51" (1/1) ... [2020-12-22 08:09:51,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43669f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:51, skipping insertion in model container [2020-12-22 08:09:51,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:09:51" (1/1) ... [2020-12-22 08:09:51,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:09:51,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:09:52,509 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[31521,31534] [2020-12-22 08:09:52,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:09:52,792 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:09:53,058 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[31521,31534] [2020-12-22 08:09:53,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:09:53,203 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:09:53,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53 WrapperNode [2020-12-22 08:09:53,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:09:53,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:09:53,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:09:53,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:09:53,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:09:53,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:09:53,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:09:53,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:09:53,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... [2020-12-22 08:09:53,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:09:53,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:09:53,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:09:53,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:09:53,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:09:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:09:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:09:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:09:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:09:56,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:09:56,822 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:09:56,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:09:56 BoogieIcfgContainer [2020-12-22 08:09:56,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:09:56,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:09:56,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:09:56,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:09:56,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:09:51" (1/3) ... [2020-12-22 08:09:56,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767d6eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:09:56, skipping insertion in model container [2020-12-22 08:09:56,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:09:53" (2/3) ... [2020-12-22 08:09:56,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767d6eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:09:56, skipping insertion in model container [2020-12-22 08:09:56,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:09:56" (3/3) ... [2020-12-22 08:09:56,837 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:09:56,844 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:09:56,849 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:09:56,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:09:56,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:09:56,902 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:09:56,902 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:09:56,902 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:09:56,902 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:09:56,903 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:09:56,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:09:56,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:09:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states. [2020-12-22 08:09:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-22 08:09:56,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:56,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:09:56,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash -772244090, now seen corresponding path program 1 times [2020-12-22 08:09:56,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:56,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882248624] [2020-12-22 08:09:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:09:58,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882248624] [2020-12-22 08:09:58,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:58,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:58,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568378030] [2020-12-22 08:09:58,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:58,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:58,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:58,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:58,167 INFO L87 Difference]: Start difference. First operand 732 states. Second operand 3 states. [2020-12-22 08:09:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:58,652 INFO L93 Difference]: Finished difference Result 1372 states and 2428 transitions. [2020-12-22 08:09:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:58,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2020-12-22 08:09:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:58,681 INFO L225 Difference]: With dead ends: 1372 [2020-12-22 08:09:58,681 INFO L226 Difference]: Without dead ends: 1181 [2020-12-22 08:09:58,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2020-12-22 08:09:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1179. [2020-12-22 08:09:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-12-22 08:09:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1826 transitions. [2020-12-22 08:09:58,813 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1826 transitions. Word has length 310 [2020-12-22 08:09:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:58,814 INFO L481 AbstractCegarLoop]: Abstraction has 1179 states and 1826 transitions. [2020-12-22 08:09:58,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1826 transitions. [2020-12-22 08:09:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-22 08:09:58,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:58,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:09:58,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:09:58,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:58,823 INFO L82 PathProgramCache]: Analyzing trace with hash -750751650, now seen corresponding path program 1 times [2020-12-22 08:09:58,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:58,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873573560] [2020-12-22 08:09:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:09:59,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873573560] [2020-12-22 08:09:59,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:59,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:59,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215676280] [2020-12-22 08:09:59,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:59,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:59,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:59,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:59,288 INFO L87 Difference]: Start difference. First operand 1179 states and 1826 transitions. Second operand 3 states. [2020-12-22 08:09:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:59,686 INFO L93 Difference]: Finished difference Result 2363 states and 3687 transitions. [2020-12-22 08:09:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:59,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2020-12-22 08:09:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:59,702 INFO L225 Difference]: With dead ends: 2363 [2020-12-22 08:09:59,702 INFO L226 Difference]: Without dead ends: 2045 [2020-12-22 08:09:59,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-12-22 08:09:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 2043. [2020-12-22 08:09:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2043 states. [2020-12-22 08:09:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3152 transitions. [2020-12-22 08:09:59,872 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3152 transitions. Word has length 310 [2020-12-22 08:09:59,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:59,874 INFO L481 AbstractCegarLoop]: Abstraction has 2043 states and 3152 transitions. [2020-12-22 08:09:59,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3152 transitions. [2020-12-22 08:09:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-22 08:09:59,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:59,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:09:59,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:09:59,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:59,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:59,887 INFO L82 PathProgramCache]: Analyzing trace with hash -754926812, now seen corresponding path program 1 times [2020-12-22 08:09:59,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:59,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661863805] [2020-12-22 08:09:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:00,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661863805] [2020-12-22 08:10:00,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:00,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:10:00,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304133750] [2020-12-22 08:10:00,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:10:00,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:00,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:10:00,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:10:00,905 INFO L87 Difference]: Start difference. First operand 2043 states and 3152 transitions. Second operand 4 states. [2020-12-22 08:10:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:01,349 INFO L93 Difference]: Finished difference Result 6043 states and 9315 transitions. [2020-12-22 08:10:01,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:10:01,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2020-12-22 08:10:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:01,372 INFO L225 Difference]: With dead ends: 6043 [2020-12-22 08:10:01,372 INFO L226 Difference]: Without dead ends: 4011 [2020-12-22 08:10:01,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:10:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2020-12-22 08:10:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4009. [2020-12-22 08:10:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-12-22 08:10:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6148 transitions. [2020-12-22 08:10:01,620 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6148 transitions. Word has length 310 [2020-12-22 08:10:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:01,627 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 6148 transitions. [2020-12-22 08:10:01,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:10:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6148 transitions. [2020-12-22 08:10:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-12-22 08:10:01,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:01,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:01,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:10:01,639 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:01,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1535762576, now seen corresponding path program 1 times [2020-12-22 08:10:01,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:01,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347449981] [2020-12-22 08:10:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:01,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347449981] [2020-12-22 08:10:01,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:01,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:01,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305611494] [2020-12-22 08:10:01,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:01,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:01,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:01,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:01,972 INFO L87 Difference]: Start difference. First operand 4009 states and 6148 transitions. Second operand 3 states. [2020-12-22 08:10:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:02,496 INFO L93 Difference]: Finished difference Result 11760 states and 17992 transitions. [2020-12-22 08:10:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:10:02,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2020-12-22 08:10:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:02,540 INFO L225 Difference]: With dead ends: 11760 [2020-12-22 08:10:02,541 INFO L226 Difference]: Without dead ends: 7876 [2020-12-22 08:10:02,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2020-12-22 08:10:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7874. [2020-12-22 08:10:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7874 states. [2020-12-22 08:10:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 12007 transitions. [2020-12-22 08:10:03,089 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 12007 transitions. Word has length 312 [2020-12-22 08:10:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:03,089 INFO L481 AbstractCegarLoop]: Abstraction has 7874 states and 12007 transitions. [2020-12-22 08:10:03,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:10:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 12007 transitions. [2020-12-22 08:10:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-12-22 08:10:03,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:03,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:03,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:10:03,107 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1558650165, now seen corresponding path program 1 times [2020-12-22 08:10:03,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:03,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541814549] [2020-12-22 08:10:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:03,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541814549] [2020-12-22 08:10:03,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:03,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:03,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792615125] [2020-12-22 08:10:03,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:03,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:03,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:03,319 INFO L87 Difference]: Start difference. First operand 7874 states and 12007 transitions. Second operand 3 states. [2020-12-22 08:10:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:04,172 INFO L93 Difference]: Finished difference Result 23555 states and 35905 transitions. [2020-12-22 08:10:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:10:04,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2020-12-22 08:10:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:04,259 INFO L225 Difference]: With dead ends: 23555 [2020-12-22 08:10:04,259 INFO L226 Difference]: Without dead ends: 15719 [2020-12-22 08:10:04,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15719 states. [2020-12-22 08:10:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15719 to 7893. [2020-12-22 08:10:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7893 states. [2020-12-22 08:10:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7893 states to 7893 states and 12035 transitions. [2020-12-22 08:10:04,934 INFO L78 Accepts]: Start accepts. Automaton has 7893 states and 12035 transitions. Word has length 312 [2020-12-22 08:10:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:04,934 INFO L481 AbstractCegarLoop]: Abstraction has 7893 states and 12035 transitions. [2020-12-22 08:10:04,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:10:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7893 states and 12035 transitions. [2020-12-22 08:10:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-12-22 08:10:04,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:04,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:04,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:10:04,952 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1676583500, now seen corresponding path program 1 times [2020-12-22 08:10:04,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:04,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9203210] [2020-12-22 08:10:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:05,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9203210] [2020-12-22 08:10:05,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:05,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:05,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522405199] [2020-12-22 08:10:05,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:05,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:05,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:05,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:05,197 INFO L87 Difference]: Start difference. First operand 7893 states and 12035 transitions. Second operand 3 states. [2020-12-22 08:10:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:06,048 INFO L93 Difference]: Finished difference Result 23574 states and 35926 transitions. [2020-12-22 08:10:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:10:06,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 313 [2020-12-22 08:10:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:06,090 INFO L225 Difference]: With dead ends: 23574 [2020-12-22 08:10:06,090 INFO L226 Difference]: Without dead ends: 15737 [2020-12-22 08:10:06,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15737 states. [2020-12-22 08:10:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15737 to 7911. [2020-12-22 08:10:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7911 states. [2020-12-22 08:10:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 12056 transitions. [2020-12-22 08:10:06,744 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 12056 transitions. Word has length 313 [2020-12-22 08:10:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:06,745 INFO L481 AbstractCegarLoop]: Abstraction has 7911 states and 12056 transitions. [2020-12-22 08:10:06,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:10:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 12056 transitions. [2020-12-22 08:10:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 08:10:06,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:06,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:06,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:10:06,764 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:06,764 INFO L82 PathProgramCache]: Analyzing trace with hash -671181557, now seen corresponding path program 1 times [2020-12-22 08:10:06,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:06,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109524272] [2020-12-22 08:10:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:07,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109524272] [2020-12-22 08:10:07,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:07,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:07,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102000365] [2020-12-22 08:10:07,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:07,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:07,153 INFO L87 Difference]: Start difference. First operand 7911 states and 12056 transitions. Second operand 3 states. [2020-12-22 08:10:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:08,283 INFO L93 Difference]: Finished difference Result 23114 states and 35137 transitions. [2020-12-22 08:10:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:10:08,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 08:10:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:08,320 INFO L225 Difference]: With dead ends: 23114 [2020-12-22 08:10:08,320 INFO L226 Difference]: Without dead ends: 15444 [2020-12-22 08:10:08,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15444 states. [2020-12-22 08:10:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15444 to 15442. [2020-12-22 08:10:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15442 states. [2020-12-22 08:10:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15442 states to 15442 states and 23376 transitions. [2020-12-22 08:10:09,301 INFO L78 Accepts]: Start accepts. Automaton has 15442 states and 23376 transitions. Word has length 314 [2020-12-22 08:10:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:09,302 INFO L481 AbstractCegarLoop]: Abstraction has 15442 states and 23376 transitions. [2020-12-22 08:10:09,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:10:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 15442 states and 23376 transitions. [2020-12-22 08:10:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 08:10:09,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:09,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:09,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:10:09,340 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:09,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1609221160, now seen corresponding path program 1 times [2020-12-22 08:10:09,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:09,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357796605] [2020-12-22 08:10:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:09,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357796605] [2020-12-22 08:10:09,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:09,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:10:09,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081097521] [2020-12-22 08:10:09,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:10:09,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:09,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:10:09,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:10:09,956 INFO L87 Difference]: Start difference. First operand 15442 states and 23376 transitions. Second operand 5 states. [2020-12-22 08:10:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:11,636 INFO L93 Difference]: Finished difference Result 45444 states and 68681 transitions. [2020-12-22 08:10:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:10:11,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-12-22 08:10:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:11,708 INFO L225 Difference]: With dead ends: 45444 [2020-12-22 08:10:11,708 INFO L226 Difference]: Without dead ends: 30057 [2020-12-22 08:10:11,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:10:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30057 states. [2020-12-22 08:10:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30057 to 30055. [2020-12-22 08:10:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30055 states. [2020-12-22 08:10:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30055 states to 30055 states and 45137 transitions. [2020-12-22 08:10:13,622 INFO L78 Accepts]: Start accepts. Automaton has 30055 states and 45137 transitions. Word has length 314 [2020-12-22 08:10:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:13,622 INFO L481 AbstractCegarLoop]: Abstraction has 30055 states and 45137 transitions. [2020-12-22 08:10:13,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:10:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 30055 states and 45137 transitions. [2020-12-22 08:10:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 08:10:13,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:13,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:13,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:10:13,677 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:13,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2088937883, now seen corresponding path program 1 times [2020-12-22 08:10:13,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:13,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296756882] [2020-12-22 08:10:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:14,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296756882] [2020-12-22 08:10:14,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:14,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:10:14,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100295485] [2020-12-22 08:10:14,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:10:14,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:10:14,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:10:14,277 INFO L87 Difference]: Start difference. First operand 30055 states and 45137 transitions. Second operand 5 states. [2020-12-22 08:10:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:16,958 INFO L93 Difference]: Finished difference Result 88702 states and 133040 transitions. [2020-12-22 08:10:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:10:16,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-12-22 08:10:16,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:17,101 INFO L225 Difference]: With dead ends: 88702 [2020-12-22 08:10:17,102 INFO L226 Difference]: Without dead ends: 58764 [2020-12-22 08:10:17,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:10:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58764 states. [2020-12-22 08:10:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58764 to 58762. [2020-12-22 08:10:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58762 states. [2020-12-22 08:10:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58762 states to 58762 states and 87564 transitions. [2020-12-22 08:10:20,559 INFO L78 Accepts]: Start accepts. Automaton has 58762 states and 87564 transitions. Word has length 316 [2020-12-22 08:10:20,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:20,560 INFO L481 AbstractCegarLoop]: Abstraction has 58762 states and 87564 transitions. [2020-12-22 08:10:20,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:10:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 58762 states and 87564 transitions. [2020-12-22 08:10:20,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 08:10:20,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:20,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:20,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:10:20,610 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:20,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1989408142, now seen corresponding path program 1 times [2020-12-22 08:10:20,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:20,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359487033] [2020-12-22 08:10:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:21,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359487033] [2020-12-22 08:10:21,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:21,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:10:21,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121192207] [2020-12-22 08:10:21,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:10:21,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:21,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:10:21,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:10:21,345 INFO L87 Difference]: Start difference. First operand 58762 states and 87564 transitions. Second operand 4 states. [2020-12-22 08:10:26,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:26,869 INFO L93 Difference]: Finished difference Result 173644 states and 258425 transitions. [2020-12-22 08:10:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:10:26,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-12-22 08:10:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:27,092 INFO L225 Difference]: With dead ends: 173644 [2020-12-22 08:10:27,093 INFO L226 Difference]: Without dead ends: 115112 [2020-12-22 08:10:27,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:10:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115112 states. [2020-12-22 08:10:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115112 to 115110. [2020-12-22 08:10:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115110 states. [2020-12-22 08:10:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115110 states to 115110 states and 170264 transitions. [2020-12-22 08:10:33,423 INFO L78 Accepts]: Start accepts. Automaton has 115110 states and 170264 transitions. Word has length 316 [2020-12-22 08:10:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:33,424 INFO L481 AbstractCegarLoop]: Abstraction has 115110 states and 170264 transitions. [2020-12-22 08:10:33,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:10:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 115110 states and 170264 transitions. [2020-12-22 08:10:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-12-22 08:10:33,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:33,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:33,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:10:33,548 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:33,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1382022353, now seen corresponding path program 1 times [2020-12-22 08:10:33,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:33,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120122383] [2020-12-22 08:10:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:34,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120122383] [2020-12-22 08:10:34,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:34,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:34,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70631175] [2020-12-22 08:10:34,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:34,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:34,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:34,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:34,101 INFO L87 Difference]: Start difference. First operand 115110 states and 170264 transitions. Second operand 3 states. [2020-12-22 08:10:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:43,934 INFO L93 Difference]: Finished difference Result 339482 states and 501264 transitions. [2020-12-22 08:10:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:10:43,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 318 [2020-12-22 08:10:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:44,261 INFO L225 Difference]: With dead ends: 339482 [2020-12-22 08:10:44,261 INFO L226 Difference]: Without dead ends: 225752 [2020-12-22 08:10:44,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225752 states. [2020-12-22 08:10:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225752 to 225750. [2020-12-22 08:10:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225750 states. [2020-12-22 08:10:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225750 states to 225750 states and 331478 transitions. [2020-12-22 08:10:56,463 INFO L78 Accepts]: Start accepts. Automaton has 225750 states and 331478 transitions. Word has length 318 [2020-12-22 08:10:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:56,464 INFO L481 AbstractCegarLoop]: Abstraction has 225750 states and 331478 transitions. [2020-12-22 08:10:56,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:10:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 225750 states and 331478 transitions. [2020-12-22 08:10:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-12-22 08:10:56,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:56,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:10:56,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:10:56,634 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:56,635 INFO L82 PathProgramCache]: Analyzing trace with hash -71306666, now seen corresponding path program 1 times [2020-12-22 08:10:56,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:56,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172529750] [2020-12-22 08:10:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:57,145 WARN L197 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-12-22 08:10:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:57,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172529750] [2020-12-22 08:10:57,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:57,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:57,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922388791] [2020-12-22 08:10:57,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:57,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:57,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:57,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:57,264 INFO L87 Difference]: Start difference. First operand 225750 states and 331478 transitions. Second operand 3 states. [2020-12-22 08:11:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:16,912 INFO L93 Difference]: Finished difference Result 676126 states and 992610 transitions. [2020-12-22 08:11:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:16,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 318 [2020-12-22 08:11:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:17,899 INFO L225 Difference]: With dead ends: 676126 [2020-12-22 08:11:17,899 INFO L226 Difference]: Without dead ends: 451038 [2020-12-22 08:11:18,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451038 states. [2020-12-22 08:11:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451038 to 225960. [2020-12-22 08:11:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225960 states. [2020-12-22 08:11:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225960 states to 225960 states and 331790 transitions. [2020-12-22 08:11:34,514 INFO L78 Accepts]: Start accepts. Automaton has 225960 states and 331790 transitions. Word has length 318 [2020-12-22 08:11:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:34,514 INFO L481 AbstractCegarLoop]: Abstraction has 225960 states and 331790 transitions. [2020-12-22 08:11:34,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 225960 states and 331790 transitions. [2020-12-22 08:11:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-12-22 08:11:34,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:34,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:11:34,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:11:34,687 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:34,687 INFO L82 PathProgramCache]: Analyzing trace with hash 523938797, now seen corresponding path program 1 times [2020-12-22 08:11:34,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:34,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079812432] [2020-12-22 08:11:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:11:35,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079812432] [2020-12-22 08:11:35,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:35,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:35,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193773364] [2020-12-22 08:11:35,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:35,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:35,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:35,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:35,216 INFO L87 Difference]: Start difference. First operand 225960 states and 331790 transitions. Second operand 3 states. [2020-12-22 08:11:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:57,438 INFO L93 Difference]: Finished difference Result 676314 states and 992816 transitions. [2020-12-22 08:11:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:57,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 319 [2020-12-22 08:11:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:58,389 INFO L225 Difference]: With dead ends: 676314 [2020-12-22 08:11:58,390 INFO L226 Difference]: Without dead ends: 451216 [2020-12-22 08:11:58,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451216 states. [2020-12-22 08:12:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451216 to 226190. [2020-12-22 08:12:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226190 states. [2020-12-22 08:12:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226190 states to 226190 states and 332054 transitions. [2020-12-22 08:12:17,025 INFO L78 Accepts]: Start accepts. Automaton has 226190 states and 332054 transitions. Word has length 319 [2020-12-22 08:12:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:17,025 INFO L481 AbstractCegarLoop]: Abstraction has 226190 states and 332054 transitions. [2020-12-22 08:12:17,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 226190 states and 332054 transitions. [2020-12-22 08:12:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 08:12:17,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:17,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:17,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:12:17,537 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2033564023, now seen corresponding path program 1 times [2020-12-22 08:12:17,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:17,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431930848] [2020-12-22 08:12:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431930848] [2020-12-22 08:12:17,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:17,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:12:17,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83363661] [2020-12-22 08:12:17,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:12:17,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:17,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:12:17,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:12:17,977 INFO L87 Difference]: Start difference. First operand 226190 states and 332054 transitions. Second operand 5 states. [2020-12-22 08:12:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:43,702 INFO L93 Difference]: Finished difference Result 666909 states and 977335 transitions. [2020-12-22 08:12:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:12:43,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-12-22 08:12:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:44,649 INFO L225 Difference]: With dead ends: 666909 [2020-12-22 08:12:44,649 INFO L226 Difference]: Without dead ends: 441300 [2020-12-22 08:12:44,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:12:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441300 states. [2020-12-22 08:13:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441300 to 441298. [2020-12-22 08:13:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441298 states. [2020-12-22 08:13:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441298 states to 441298 states and 642140 transitions. [2020-12-22 08:13:15,210 INFO L78 Accepts]: Start accepts. Automaton has 441298 states and 642140 transitions. Word has length 320 [2020-12-22 08:13:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:15,210 INFO L481 AbstractCegarLoop]: Abstraction has 441298 states and 642140 transitions. [2020-12-22 08:13:15,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:13:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 441298 states and 642140 transitions. [2020-12-22 08:13:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 08:13:15,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:15,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:13:15,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:13:15,585 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:15,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash 435227997, now seen corresponding path program 1 times [2020-12-22 08:13:15,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:15,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571459020] [2020-12-22 08:13:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:13:16,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571459020] [2020-12-22 08:13:16,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:16,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:13:16,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098876722] [2020-12-22 08:13:16,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:13:16,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:16,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:13:16,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:13:16,506 INFO L87 Difference]: Start difference. First operand 441298 states and 642140 transitions. Second operand 4 states.